Heating device and aerosol generator

Abstract

The application provides a heating device and an aerosol generator, and belongs to the technical field of aerosol generators. The heating device is used on an inhalation device, and the inhalation device comprises a cup body for containing an aerosol substrate. The heating device comprises a main frame body, a first heating element and a second heating element. An airflow channel is formed on the main frame body. The airflow channel forms an air inlet hole and an air outlet hole on the main frame body respectively. The first heating element is arranged in the main frame body and is arranged on the airflow channel. The second heating element is arranged on the end face of the end of the main frame body facing the cup body. Since the second heating element is arranged on the end face of the end of the main frame body facing the cup body, the second heating element heats the aerosol substrate in the cup body by means of heat radiation, and the aerosol substrate in the cup body can be preheated. When the aerosol generator is used for suction, the external airflow can heat the aerosol substrate in the cup body again after passing through the first heating element, so that the aerosol substrate can be fully heated.

Description

Technical Field

[0001] This application belongs to the field of aerosol generator technology, and particularly relates to a heating device and an aerosol generator. Background Technology

[0002] An aerosol generator is a device used to heat an aerosol matrix to produce aerosols. Some existing aerosol generators use charcoal to heat the aerosol matrix. This method requires igniting the charcoal, which is cumbersome, and leaves behind ash residue that is difficult to clean. Other aerosol generators use an external power source to power the heating element within the generator, but initially, the aerosol produced has a poor taste due to insufficient heating of the aerosol matrix. Utility Model Content

[0003] The purpose of this application is to provide a heating device and an aerosol generator to solve the technical problem in the prior art that the aerosol taste is poor when the aerosol generator is first drawn due to insufficient heating temperature of the aerosol matrix.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows: The first aspect of this application provides a heating device for use in an inhalation device, the inhalation device including a cup for holding an aerosol matrix, and the heating device including:

[0005] The main frame has airflow channels, and the airflow channels form air inlets and air outlets on the main frame. The air outlets are directed toward the cup body.

[0006] The first heating element is disposed within the main frame and is located in the airflow channel;

[0007] The second heating element is located on the end face of the main frame facing the cup body.

[0008] In some implementations, the main frame includes a main shell and a support frame. The main shell is provided with an air inlet, and the support frame is installed inside the main shell. A receiving cavity is formed inside the support frame, and a first heating element is disposed inside the receiving cavity. An intermediate air inlet is provided on the support frame and communicates with the receiving cavity. Gas entering from the air inlet can flow into the receiving cavity through the intermediate air inlet, and one end of the air outlet is communicated with the receiving cavity.

[0009] In some implementations, the central air inlet and outlet are located on opposite sides of the second heating element, and the central air inlet and outlet are staggered.

[0010] In some implementations, the first heating element is spiral-shaped, and the first heating element is spirally coiled around the central axis of the first heating element, wherein the central axis extends along the length direction of the first heating element.

[0011] In some implementations, the support frame includes a cover portion and a bracket portion. An annular groove is formed on the bracket portion, and the heating element is located in the annular groove. One end of the cover portion is inserted into the annular groove so that the two form a receiving cavity. The cover portion is provided with a plurality of intermediate air inlets, which are spaced apart along the circumference of the cover portion. The bracket portion is provided with a plurality of air outlets, which are spaced apart along the circumference of the bracket portion.

[0012] In some implementations, the circumferential side of the support portion has an abutment plate, and the abutment plate and the end of the cover portion away from the support portion respectively cooperate with two inner sides opposite to the main housing to limit the orientation of the support frame in the main housing along the distribution direction of the cover portion and the support portion.

[0013] In some implementations, a protruding part is formed on the end face of the main frame facing the cup body, the protruding part is located in the middle of the end face, and the second heating element is arranged around the protruding part on the end face.

[0014] In some implementations, the second heating element is a ceramic heating element.

[0015] In some implementations, the main housing has an installation cavity and a placement cavity, the placement cavity is arranged circumferentially along the installation cavity, the support frame is located in the installation cavity, the heating device also includes a control board, the control board is arranged in the placement cavity, and the first heating element and the second heating element are both electrically connected to the control board.

[0016] In some implementations, the main housing forms a receiving space for placing the cup, the receiving space is connected to the vent, and the placement cavity is arranged circumferentially around the receiving space.

[0017] A second aspect of this application provides an aerosol generator, including an inhalation device and a heating device as described in any of the above technical solutions, the heating device being supported on a cup body of the inhalation device.

[0018] The beneficial effects of this application are as follows: In the embodiments of this application, since the second heating element is disposed on the end face of the main frame facing the cup body, the second heating element heats the aerosol matrix in the cup body by means of thermal radiation, which can realize the preheating of the aerosol matrix in the cup body; when used for aspiration aerosol generator, the external airflow can reheat the aerosol matrix in the cup body after passing through the first heating element, so that the aerosol matrix can be fully heated, avoiding the problem of poor aerosol taste when aspiration aerosol generator is first started due to insufficient heating temperature of the aerosol matrix in the prior art. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of an aerosol generator provided in some embodiments of this application;

[0021] Figure 2 Explosion diagrams of aerosol generators provided in some embodiments of this application;

[0022] Figure 3 This is a schematic diagram of the structure of a heating device provided in some embodiments of this application;

[0023] Figure 4 This is a cross-sectional schematic diagram of a heating device provided in some embodiments of this application;

[0024] Figure 5 This is a cross-sectional schematic diagram of the heating device and the cup body provided in some embodiments of this application;

[0025] Figure 6 This is a cross-sectional schematic diagram of a heating device provided in some embodiments of this application;

[0026] Figure 7 This is a schematic diagram of the structure of the support frame provided in some embodiments of this application;

[0027] Figure 8 This is a schematic diagram of the structure of the cover portion provided in some embodiments of this application;

[0028] Figure 9 This is a schematic diagram of the structure of the support portion provided in some embodiments of this application;

[0029] Figure 10 A cross-sectional schematic diagram of the support frame and the first heating element provided in some embodiments of this application;

[0030] Figure 11 A front view schematic diagram of a first heating element provided for some embodiments of this application;

[0031] Figure 12 A cross-sectional schematic diagram of the main housing provided for some embodiments of this application;

[0032] Figure 13 An exploded schematic diagram of the main casing provided for some embodiments of this application.

[0033] The following are the labeling elements in the figure:

[0034] 100 - Aerosol generator; 200 - Aerosol matrix;

[0035] 10 - Heating device; 20 - Suction device;

[0036] 1-Main frame; 2-First heating element; 3-Second heating element; 4-First sealing element; 5-Second sealing element; 6-Third sealing element;

[0037] 11-Main shell; 12-Support frame;

[0038] 111-Air inlet; 112-Opening; 113-Mounting cavity; 114-Placement cavity; 115-Accommodation space; 116-Top cover; 117-Outer shell; 118-Bottom cover; 119-Connecting cylinder;

[0039] 1161 - First section;

[0040] 1171 - Outer shell body; 1172 - Outer shell end;

[0041] 1181 - Longitudinal section; 1182 - Transverse section;

[0042] 121-Cover body; 122-Support body; 123-Receiving cavity;

[0043] 1211 - Central air inlet; 1212 - Cylinder body; 1213 - Circumferential cover plate; 1214 - Positioning groove; 1215 - Limiting protrusion;

[0044] 1221 - Vent; 1222 - Abutment plate; 1223 - Annular groove; 1224 - Protruding part; 1225 - Bottom of bracket; 1226 - First annular cylinder; 1227 - Second annular cylinder; 1228 - Positioning protrusion; 1229 - Support protrusion;

[0045] 1231 - First cavity wall; 1232 - Second cavity wall; 1233 - Third cavity wall; 1234 - Fourth cavity wall;

[0046] 201 - Cup body; 202 - Inhalation tube. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be further described in detail below with reference to the accompanying drawings. The embodiments described with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0048] In the description of this application, it should be understood that the terms "length", "width", "thickness", "top", "bottom", "inner", "outer", "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0049] To facilitate a clear description of the technical solutions of this application, the terms "first" and "second" are used to distinguish identical or similar items with essentially the same function and effect. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and that the terms "first" and "second" do not necessarily imply that they are different.

[0050] In this application, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0051] In this application, "and / or" is merely a way of describing the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0052] It should be noted that, in this application, the words "in one embodiment," "exemplarily," and "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "in one embodiment," "exemplarily," or "for example" should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of words such as "in one embodiment," "exemplarily," and "for example" is intended to present the relevant concepts in a specific manner.

[0053] Please see Figures 1-2 , Figure 1 This is a schematic diagram of the structure of an aerosol generator 100 provided in some embodiments of this application. Figure 2 An exploded schematic diagram of an aerosol generator 100 provided in some embodiments of this application.

[0054] Please see Figure 1 and Figure 2The aerosol generator 100 provided in this application embodiment includes an inhalation device 20 and a heating device 10, with the heating device 10 disposed at one end of the inhalation device 20.

[0055] Please see Figure 2 A cup body 201 is provided at one end of the inhalation device 20. The cup body 201 is used to hold the aerosol matrix 200. The heating device 10 is located at the end of the inhalation device 20 where the cup body 201 is provided. The heating device 10 is used to heat the aerosol matrix 200 in the cup body 201.

[0056] Please see Figure 2 The diagram illustrates that the inhalation device 20 includes an inhalation tube 202. When the user inhales through the inhalation tube 202, external airflow can enter the inhalation device 20 through the heating device 10. The aerosol generated by the heating device 10 heating the aerosol matrix 200 can flow into the interior of the inhalation device 20 with the airflow. After being filtered by the liquid inside the inhalation device 20, the aerosol flows to the inhalation tube 202.

[0057] Please see Figures 3-5 , Figure 3 This is a schematic diagram of the structure of the heating device 10 provided in some embodiments of this application. Figure 4 This is a cross-sectional schematic diagram of the heating device 10 provided in some embodiments of this application. Figure 5 This is a cross-sectional schematic diagram of the heating device 10 and the cup body 201 provided in some embodiments of this application.

[0058] Please see Figure 4 The heating device 10 provided in this application embodiment includes a main frame 1, a first heating element 2 and a second heating element 3, with the first heating element 2 and the second heating element 3 disposed on the main frame 1.

[0059] In this embodiment, an airflow channel is formed on the main frame 1, and the airflow channel forms an air inlet 111 and an air outlet 1221 on the main frame 1, respectively. Please refer to [link to relevant documentation]. Figure 4 The diagram illustrates the air inlet 111 and the air outlet 1221. Please refer to [link / reference]. Figure 5 The air outlet 1221 is directed toward the cup body 201. When the user inhales through the suction tube 202, external airflow can flow into the main frame 1 through the air inlet 111 and exit the main frame 1 through the air outlet 1221.

[0060] Please see Figure 4 The first heating element 2 is disposed inside the main frame 1 and is positioned on the airflow channel. Please refer to [link / reference]. Figure 4The direction of airflow is indicated by arrows. External airflow can flow into the main frame 1 through the air inlet 111, carry away the heat of the first heating element 2 after passing through the first heating element 2, and be discharged from the main frame 1 through the air outlet 1221. The high-temperature air discharged from the air outlet 1221 can be used to heat the aerosol matrix 200 in the cup body 201.

[0061] In some examples, the number of first heating elements 2 is at least one.

[0062] In some examples, there are more than two first heating elements 2, and each first heating element 2 is arranged sequentially along the direction of the airflow channel.

[0063] In some examples, the first heating element 2 may include a heating wire or a heating mesh.

[0064] Please see Figure 5 The second heating element 3 is disposed on the end face of the main frame 1 facing the cup body 201. When the second heating element 3 is working, it can heat the aerosol matrix 200 inside the cup body 201. Since the second heating element 3 is close to the cup body 201, the second heating element 3 mainly relies on thermal radiation to heat the aerosol matrix 200 inside the cup body 201.

[0065] In some examples, at least one second heating element 3 may be provided. When there are two or more second heating elements 3, each second heating element 3 is respectively provided on the corresponding area of ​​the end face of the main frame 1.

[0066] In some examples, the first heating element 2 may include a heating wire or a heating mesh.

[0067] In some examples, the second heating element 3 may be detachably connected to the main frame 1 via a connector; or the second heating element 3 may be plugged into the main frame 1.

[0068] In this embodiment, since the second heating element 3 is disposed on the end face of the main frame 1 facing the cup body 201, the second heating element 3 heats the aerosol matrix 200 in the cup body 201 by means of thermal radiation, which can achieve preheating of the aerosol matrix 200 in the cup body 201; when used to draw aerosol generator 100, the external airflow can heat the aerosol matrix 200 in the cup body 201 again after passing through the first heating element 2, so that the aerosol matrix 200 can be fully heated, avoiding the problem of poor aerosol taste when drawing aerosol generator 100 at the beginning due to insufficient heating temperature of aerosol matrix 200, which exists in the prior art.

[0069] In some embodiments, see Figure 4 and Figure 5On the end face of the main frame 1 facing the cup body 201, a protruding part 1224 is formed, extending in the direction of entering the cup body 201. The protruding part 1224 is located in the middle region of the end face of the main frame 1.

[0070] Please see Figure 5 The solid arrows indicate the direction of airflow. External airflow enters the main frame 1 through the air inlet 111, carries away the heat from the first heating element 2 after passing through the first heating element 2, and exits the main frame 1 through the air outlet 1221, flowing towards the cup body 201. The hot air flowing towards the cup body 201 flows into the suction device 20 through the air passage in the middle of the cup body 201. In this embodiment, a protruding portion 1224 is provided on the end face of the main frame 1 facing the cup body 201 to prevent the airflow from flowing along the dashed arrows and into the air passage in the middle of the cup body 201 after exiting through the air outlet 1221. This would be detrimental to the heating effect of the hot air exiting through the air outlet 1221 on the aerosol matrix 200 inside the cup body 201.

[0071] In this embodiment, by forming a protruding part 1224 on the end face of the main frame 1 facing the cup body 201, the flow direction of the hot airflow discharged from the air outlet 1221 can be affected, which facilitates the guidance of the airflow to the aerosol matrix 200 and ensures the heating effect on the aerosol matrix 200.

[0072] In some embodiments, the second heating element 3 may be a ceramic heating plate, wherein the ceramic heating plate is a sheet-shaped heating device made of ceramic material as the base and combined with an electric heating element, and has the characteristics of high heating efficiency, fast heating speed, good temperature uniformity and long service life.

[0073] In some embodiments, the second heating element 3 is a ceramic heating plate and is annular, and is sleeved on the outside of the protruding portion 1224; in other embodiments, two or more second heating elements 3 may be provided, and each second heating element 3 is arranged sequentially at intervals along the circumferential direction of the protruding portion 1224.

[0074] Please see Figures 6-11 , Figure 6 This is a cross-sectional schematic diagram of the heating device 10 provided in some embodiments of this application. Figure 7 This is a schematic diagram of the structure of the support frame 12 provided in some embodiments of this application. Figure 8 This is a schematic diagram of the structure of the cover portion 121 provided in some embodiments of this application. Figure 9 This is a schematic diagram of the structure of the support portion 122 provided in some embodiments of this application. Figure 10 This is a cross-sectional schematic diagram of the support frame 12 and the first heating element 2 provided in some embodiments of this application. Figure 11 This is a front view schematic diagram of the first heating element 2 provided for some embodiments of this application.

[0075] In some embodiments, see Figure 6 The main frame 1 includes a main housing 11 and a support frame 12. The main housing 11 has an air inlet 111. The support frame 12 is installed inside the main housing 11, and a receiving cavity 123 is formed within the support frame 12, with the first heating element 2 disposed within the receiving cavity 123. Please refer to... Figure 6 The support frame 12 is provided with a central air inlet 1211 that communicates with the receiving cavity 123. Gas entering through the air inlet 111 flows into the receiving cavity 123 through the central air inlet 1211. Please refer to [link / reference]. Figure 6 One end of the vent 1221 is connected to the receiving cavity 123. The gas flowing into the receiving cavity 123 is discharged from the vent 1221 after passing through the first heating element 2.

[0076] See some examples. Figure 6 The main housing 11 has an installation cavity 113, and the support frame 12 is installed in the installation cavity 113. The gas entering from the air inlet 111 on the main housing 11 first flows into the installation cavity 113, and the gas in the installation cavity 113 flows into the receiving cavity 123 through the middle air inlet 1211.

[0077] See some examples. Figure 6 The main housing 11 is provided with an opening 112, one end of the support frame 12 is exposed to the outside through the opening 112, and an air vent 1221 is provided on the support frame 12, with one end of the air vent 1221 extending to the end face of the end of the support frame 12 exposed outside the opening 112; or, in other examples, the air vent 1221 can be formed on the support frame 12 and the main housing 11, that is, the air vent 1221 includes a first hole segment and a second hole segment, the first hole segment and the second hole segment are connected and provided, the first hole segment is provided on the support frame 12 and is connected to the receiving cavity 123, and the second hole segment is provided on the main housing 11.

[0078] In this embodiment, by placing the first heating element 2 inside the receiving cavity 123 of the support frame 12, and by ensuring that the airflow entering from the air inlet 111 passes through the receiving cavity 123 before being discharged outside the main frame 1, it is beneficial for the airflow to fully contact the first heating element 2, thereby increasing the temperature of the airflow flowing through the heating device 10.

[0079] In some embodiments, see Figure 11 The first heating element 2 is spiral-shaped, meaning it is a spiral heating wire. Please refer to... Figure 11 The central axis of the first heating element 2 is indicated by a dashed line L. The central axis extends along the length of the first heating element 2, and the first heating element 2 is spirally coiled around the central axis.

[0080] In some examples, the distance between two adjacent spiral turns in the first heating element 2 along the central axis is 0~2mm. For example, the distance between two adjacent spiral turns in the first heating element 2 along the central axis can be set to 0~0.2mm, 0.2~0.4mm, 0.4~0.8mm, 0.8~1mm, 1~1.2mm, 1.2~1.4mm, 1.4~1.6mm, 1.6~1.8mm, or 1.8~2mm, etc.

[0081] In this embodiment, by setting the first heating element 2 in a spiral shape, the heating area can be increased and the heating efficiency can be improved.

[0082] In some embodiments, the receiving cavity 123 on the support frame 12 is annular, and the length direction of the first heating element 2 is along the circumferential direction of the receiving cavity 123. Specifically, please refer to Figure 6 The cavity wall of the receiving cavity 123 includes a first cavity wall 1231, a second cavity wall 1232, a third cavity wall 1233, and a fourth cavity wall 1234. Please refer to [link to relevant documentation]. Figure 6 The first cavity wall surface 1231 and the second cavity wall surface 1232 are arranged opposite each other in the vertical direction, and the third cavity wall surface 1233 and the fourth cavity wall surface 1234 are arranged opposite each other in the radial direction of the support frame 12.

[0083] In some examples, one end of the vent 1221 is opened to the second cavity wall 1232, and one end of the middle vent 1211 is opened to the first cavity wall 1231; or, in other examples, one end of the vent 1221 may be opened to the second cavity wall 1232, and one end of the middle vent 1211 may be opened to the fourth cavity wall 1234.

[0084] In this embodiment, the receiving cavity 123 on the support frame 12 is arranged in a ring shape, which facilitates the setting of multiple air outlets 1221 connected to the receiving cavity 123, and at the same time, allows the air entering from the middle air inlet 1211 to fully contact the first heating element 2 and then be discharged from the air outlet 1221.

[0085] In some embodiments, see Figure 6 The middle air inlet 1211 and air outlet 1221 are located on opposite sides of the second heating element 3, and the middle air inlet 1211 and air outlet 1221 are staggered.

[0086] Regarding the misalignment of the intermediate air inlet 1211 and the air outlet 1221, it can be understood that when the intermediate air inlet 1211 is projected onto the cavity wall surface where the air outlet 1221 is located, the intermediate air inlet 1211 does not coincide with the air outlet 1221, nor does it intersect with the air outlet 1221.

[0087] In some examples, one end of the air outlet 1221 is opened to the second cavity wall 1232, and one end of the intermediate air inlet 1211 is opened to the first cavity wall 1231. Multiple intermediate air inlets 1211 are spaced apart on the support frame 12 in the circumferential direction, and multiple air outlets 1221 are spaced apart on the support frame 12 in the circumferential direction. Each intermediate air inlet 1211 is offset from the air outlet 1221. For example, it can be configured that when the intermediate air inlet 1211 is projected onto the second cavity wall 1232 where the air outlet 1221 is located, the projection falls on the position between two adjacent air outlets 1221.

[0088] In this embodiment, by setting the intermediate air inlet 1211 and air outlet 1221 to be staggered, the time for airflow to flow in the receiving cavity 123 is increased, so as to facilitate the airflow to fully absorb the heat generated by the first heating element 2.

[0089] In some embodiments, see Figure 6 The central air inlet 1211 on the support frame 12 is directly opposite the air inlet 111 on the main housing 11, so that the airflow flowing in from the air inlet 111 of the main housing 11 can quickly flow to the central air inlet 1211.

[0090] See some examples. Figure 6 The main housing 11 is provided with two or more air inlets 111, which are spaced apart in the circumferential direction.

[0091] In some embodiments, see Figure 6 The first heating element 2 can be configured to contact the third cavity wall 1233 and the fourth cavity wall 1234; or, in other examples, the distance between the third cavity wall 1233 and the fourth cavity wall 1234 can be configured to be slightly greater than the length of the first heating element 2 in the radial direction of the support frame 12, so that the air entering from the middle air inlet 1211 can fully contact the first heating element 2 and then be discharged from the air outlet 1221.

[0092] Regarding the distance between the third cavity wall surface 1233 and the fourth cavity wall surface 1234 being slightly larger than the length of the first heating element 2 along the radial direction of the support frame 12, in some examples, the difference between the distance between the third cavity wall surface 1233 and the fourth cavity wall surface 1234 and the length of the first heating element 2 along the radial direction of the support frame 12 can be set to a range of 0~5mm. For example, the difference between the distance between the third cavity wall surface 1233 and the fourth cavity wall surface 1234 and the length of the first heating element 2 along the radial direction of the support frame 12 can be set to 0~1mm, 1~2mm, 2~3mm, 3~4mm, or 4~5mm, etc.

[0093] In some embodiments, see Figure 6The distance between the first cavity wall 1231 and the second cavity wall 1232 is greater than the length of the first heating element 2 along the axis of the support frame 12; or, in other embodiments, the first heating element 2 may be arranged to contact the first cavity wall 1231 and the second cavity wall 1232.

[0094] In this embodiment, when the intermediate air inlet 1211 and air outlet 1221 are arranged opposite each other on both sides of the first heating element 2, by setting the distance between the first cavity wall surface 1231 and the second cavity wall surface 1232 to be greater than the length of the first heating element 2 along the axis of the support frame 12, the flow time of the airflow in the receiving cavity 123 can be increased as much as possible; by setting the first heating element 2 to contact the first cavity wall surface 1231 and the second cavity wall surface 1232, the volume of the support frame 12 can be reduced.

[0095] In some embodiments, see Figure 6 and Figure 7 The support frame 12 includes a cover portion 121 and a bracket portion 122. Please refer to [link / reference]. Figure 10 An annular groove 1223 is formed on the support portion 122, and the first heating element 2 is located in the annular groove 1223. Please refer to [link / reference]. Figure 7 One end of the cover portion 121 is inserted into the annular groove 1223 so that the two form a receiving cavity 123.

[0096] Please see Figure 7 The cover portion 121 is provided with a plurality of intermediate air inlets 1211, which are spaced apart along the circumference of the cover portion 121; the support portion 122 is provided with a plurality of air outlets 1221, which are spaced apart along the circumference of the support portion 122.

[0097] In this embodiment of the application, by providing a support frame 12 including a cover portion 121 and a bracket portion 122, the number of components of the support frame 12 can be minimized while allowing the support frame 12 to be assembled to form a receiving cavity 123.

[0098] In some embodiments, see Figure 9 and Figure 10 The circumferential side of the bracket portion 122 has an abutment plate 1222, please refer to Figure 6 The abutment plate 1222 and the cover portion 121, at one end away from the support portion 122, respectively cooperate with the two inner sides opposite to the main housing 11 to limit the position of the support frame 12 within the main housing 11 along the distribution direction of the cover portion 121 and the support portion 122, so that the abutment plate 1222 and the cover portion 121 can be assembled onto the main housing 11 without the need for other connecting parts.

[0099] In some embodiments, see Figure 6A first sealing element 4 is provided between the end of the cover portion 121 away from the support portion 122 and the inner side of the main housing 11.

[0100] In some examples, the first seal 4 is a high-temperature resistant silicone seal to improve the service life of the first seal 4.

[0101] In some examples, the main housing 11 includes a first plate portion 1161, on which an air inlet 111 is provided, and the inner side of the first plate portion 1161 contacts the first seal 4. Specifically, the first plate portion 1161 includes a middle region and an edge region, the edge region being disposed circumferentially in the middle region, the edge region being provided with the air inlet 111, and the first seal 4 being disposed between the inner side of the middle region and one end of the cover portion 121.

[0102] In this embodiment, a first sealing element 4 is provided between the end of the cover portion 121 away from the support portion 122 and the inner side of the main housing 11, so that the end of the cover portion 121 away from the support portion 122 can be limited to the inner side of the main housing 11 by squeezing the first sealing element 4.

[0103] In some embodiments, the abutment plate 1222 is sealed to the inner side of the main housing 11.

[0104] See some examples. Figure 6 The main housing 11 is provided with an opening 112. The end of the bracket part 122 facing away from the cover part 121 is inserted into the opening 112. A second sealing member 5 is provided between the bracket part 122 and the main housing 11. The second sealing member 5 realizes the sealing fit between the abutment plate 1222 and the inner side of the main housing 11 and / or realizes the sealing fit between the opening 112 and the bracket part 122.

[0105] Regarding the specific shape of the second seal 5, please refer to some examples. Figure 10 The second sealing element 5 includes a first annular area, a second annular area and a third annular area. The second annular area connects the first annular area and the third annular area. The third annular area is disposed between the opening 112 and the bracket portion 122. The second annular area is disposed between the abutment plate 1222 and the inner side of the main housing 11. The first annular area is disposed around the circumferential outer side of the abutment plate 1222.

[0106] In this embodiment, a sealing fit is provided between the abutment plate 1222 and the inner side of the main housing 11 to prevent gas in the main frame 1 from overflowing between the abutment plate 1222 and the main housing 11.

[0107] In some embodiments, see Figure 10The support portion 122 includes a support bottom 1225, a first annular cylinder 1226, and a second annular cylinder 1227. The first annular cylinder 1226 is fitted inside the second annular cylinder 1227. The support bottom 1225 is located at one end of the first annular cylinder 1226 and the second annular cylinder 1227. Please refer to [link to relevant documentation]. Figure 9 An annular groove 1223 is formed between the first annular cylinder 1226 and the second annular cylinder 1227, and an air outlet 1221 is provided on the bottom 1225 of the support.

[0108] See some examples. Figure 10 The bottom 1225 of the bracket has a protruding part 1224 on the side opposite to the first annular cylinder 1226 and the second annular cylinder 1227, and an abutment plate 1222 is provided on the outer circumferential side of the bottom 1225 of the bracket.

[0109] In some examples, the support portion 122 is a one-piece molded structure.

[0110] In some embodiments, see Figure 8 and Figure 10 The cover portion 121 includes a cylindrical body 1212 and a circumferential cover plate 1213. The circumferential cover plate 1213 is disposed on the cylindrical body 1212 along the circumferential direction of the cylindrical body 1212. The circumferential cover plate 1213 is used to cover the annular groove 1223. A central air inlet hole 1211 is provided on the circumferential cover plate 1213.

[0111] In some examples, one end of the cylinder 1212 abuts against the end face of the first annular cylinder 1226; or, in other examples, see [link to relevant documentation]. Figure 10 One end of the cylinder 1212 is inserted into the first annular cylinder 1226 to facilitate the positioning and installation of both.

[0112] See some examples. Figure 10 The height of the first annular cylinder 1226 is greater than the height of the second annular cylinder 1227, and one end of the first annular cylinder 1226 is inserted into the cylinder body 1212.

[0113] In some embodiments, one of the second annular cylinder 1227 and the circumferential cover plate 1213 is provided with a positioning protrusion 1228, and the other is provided with a positioning groove 1214. The positioning protrusion 1228 is inserted into the positioning groove 1214 to achieve positioning and installation of the cover portion 121 and the bracket portion 122. Please refer to Figure 9 The diagram illustrates that a positioning protrusion 1228 is provided on the end face of the second annular cylinder 1227. Please refer to [link / reference]. Figure 8 A positioning groove 1214 is provided on the circumferential cover plate 1213.

[0114] In some examples, at least one positioning protrusion 1228 is provided on the second annular cylinder 1227. When there are two or more positioning protrusions 1228, the positioning protrusions 1228 are spaced apart along the circumferential direction of the second annular cylinder 1227. In addition, the number of positioning grooves 1214 on the circumferential cover plate 1213 is the same as the number of positioning protrusions 1228, and the two correspond one-to-one.

[0115] In some embodiments, see Figure 9 At least one support protrusion 1229 is provided on the bottom surface of the annular groove 1223, and the support protrusion 1229 is used to support the first heating element 2.

[0116] In some examples, there are more than two support protrusions 1229, and each support protrusion 1229 is spaced apart along the circumferential direction of the annular groove 1223.

[0117] In some embodiments, see Figure 8 At least one limiting protrusion 1215 is provided on the side of the circumferential cover plate 1213 facing the annular groove 1223. The limiting protrusion 1215 is used to limit the amount of movement of the first heating element 2 along the axial direction of the support frame 12.

[0118] In some examples, there are two or more limiting protrusions 1215, and each limiting protrusion 1215 is spaced apart along the circumferential direction of the circumferential cover plate 1213.

[0119] In some examples, the limiting protrusion 1215 is in contact with the second heating element 3 or there is a gap between them.

[0120] Please see Figure 10 The diagram illustrates the bottom 1225 of the bracket, the first annular cylinder 1226, and the second annular cylinder 1227. In some embodiments, the end face of the bottom 1225 of the bracket away from the first annular cylinder 1226 and the second annular cylinder 1227 includes a first region, a second region, a third region, and a fourth region. The first region, the second region, the third region, and the fourth region are sequentially nested from the inside to the outside. A protruding part 1224 is provided on the first region, and one end of the air outlet 1221 is connected to the third region.

[0121] In some examples, the second heating element 3 covers at least the second region.

[0122] In some examples, the second heating element 3 covers the second region and the third region, and the second heating element 3 is provided with an opening to avoid the vent 1221.

[0123] In some examples, the second heating element 3 covers the second region, the third region, and the fourth region, and the second heating element 3 is provided with an opening to avoid the vent 1221.

[0124] In some instances, the second region is provided with one or more second heating elements 3, and the fourth region is provided with one or more second heating elements 3.

[0125] Please see Figures 12-13 , Figure 12 This is a cross-sectional schematic diagram of the main housing 11 provided in some embodiments of this application. Figure 13 An exploded schematic diagram of the main casing 11 provided for some implementations of this application.

[0126] In some embodiments, see Figure 12 The main housing 11 has an installation cavity 113 and a placement cavity 114. The placement cavity 114 is arranged around the circumference of the installation cavity 113. The support frame 12 is located in the installation cavity 113. The heating device 10 also includes a control board, which is disposed in the placement cavity 114. The first heating element 2 and the second heating element 3 are both electrically connected to the control board.

[0127] In some examples, the heating device 10 also includes a battery that is wired to the control board and is disposed within the placement cavity 114.

[0128] In this embodiment, the placement cavity 114 is arranged circumferentially along the mounting cavity 113 to prevent the position of the control board and battery from affecting the airflow channel on the main frame 1.

[0129] In some embodiments, see Figure 12 The main shell 11 forms a receiving space 115 for placing the cup 201. The receiving space 115 is connected to the air vent 1221. The placement cavity 114 is arranged around the circumference of the receiving space 115.

[0130] In this embodiment, the main housing 11 forms a receiving space 115 so that the cup body 201 can be inserted into the receiving space 115, and the heating device 10 is stably supported on the cup body 201.

[0131] In some embodiments, see Figure 12 The main housing 11 includes an upper cover 116, an outer shell 117, and a bottom cover 118. The upper cover 116 is disposed at one end of the outer shell 117, and an installation cavity 113 is formed between the upper cover 116 and the outer shell 117. The bottom cover 118 is disposed on the inner side of the outer shell 117, and the two together form a placement cavity 114.

[0132] In some examples, the top cover 116 and the outer shell 117 may be detachably connected via a connector, or the top cover 116 and the outer shell 117 may be snap-fit ​​connected.

[0133] In some examples, the housing 117 and the bottom cover 118 may be detachably connected via a connector, or the housing 117 and the bottom cover 118 may be snap-fit ​​connected.

[0134] In this embodiment, the main housing 11 is provided with an upper cover 116, an outer shell 117, and a bottom cover 118, so as to facilitate the assembly of the support frame 12, control board, and battery inside the main housing 11.

[0135] In some embodiments, see Figure 13 The bottom cover 118 includes a transverse portion 1182 and a longitudinal portion 1181. The longitudinal portion 1181 is cylindrical, and the transverse portion 1182 is disposed on the outer peripheral side of the longitudinal portion 1181 and near the bottom end of the longitudinal portion 1181. The outer shell 117 includes an outer shell body 1171 and an outer shell end 1172. The outer shell end 1172 is disposed on the inner peripheral side of the outer shell body 1171 and near the top end of the outer shell body 1171. An opening 112 is provided on the outer shell end 1172. The outer shell body 1171 is sleeved on the outside of the longitudinal portion 1181, and the end of the outer shell body 1171 away from the top cover 116 is in contact with the transverse portion 1182.

[0136] In some examples, the top end of the longitudinal portion 1181 may be configured to seal against the end of the housing 1172; or, in other embodiments, please refer to [reference needed]. Figure 12 and Figure 13 The main housing 11 also includes a connecting cylinder 119, the bottom end of which contacts the top end of the longitudinal portion 1181, and the top end of the connecting cylinder 119 is sealed to the outer casing end 1172 by a third sealing member 6.

[0137] In some examples, the connecting cylinder 119 and the longitudinal portion 1181 can be detachably connected, for example, by means of a connector.

[0138] In some embodiments, the heating device 10 further includes a temperature detection component for detecting the temperature of the accommodating space 115, and the temperature detection component is connected to the control board.

[0139] In some examples, when the temperature detection component detects that the temperature inside the accommodating space 115 is higher than the preset temperature, the control board controls to reduce the power of the first heating element 2 and the second heating element 3 simultaneously; or, the control board controls to reduce the power of the first heating element 2 or the second heating element 3. When the first heating element 2 or the second heating element 3 stops working, if the temperature detection component detects that the temperature inside the accommodating space 115 is still higher than the preset temperature, the control board controls to reduce the power of the heating element that is in operation.

[0140] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A heating device, characterized in that, For use in an inhalation device (20), the inhalation device (20) includes a cup (201) for holding an aerosol matrix (200), and the heating device (10) includes: The main frame (1) has an airflow channel formed on it. The airflow channel forms an air inlet (111) and an air outlet (1221) on the main frame (1). The air outlet (1221) is used to face the cup body (201). The first heating element (2) is disposed inside the main frame (1) and the first heating element (2) is disposed in the airflow channel; The second heating element (3) is disposed on the end face of the main frame (1) facing the cup body (201).

2. The heating device as described in claim 1, characterized in that, The main frame (1) includes a main housing (11) and a support frame (12). The main housing (11) is provided with an air inlet (111), and the support frame (12) is installed inside the main housing (11). The support frame (12) has a cavity (123) and the first heating element (2) is disposed in the cavity (123). The support frame (12) is provided with an intermediate air inlet (1211) that communicates with the cavity (123). Gas entering from the air inlet (111) can flow into the cavity (123) through the intermediate air inlet (1211). One end of the air outlet (1221) is connected to the cavity (123).

3. The heating device as described in claim 2, characterized in that, The intermediate air inlet (1211) and the air outlet (1221) are located on opposite sides of the second heating element (3), and the intermediate air inlet (1211) and the air outlet (1221) are misaligned.

4. The heating device as described in claim 2, characterized in that, The first heating element (2) is spiral in shape and is spirally coiled around the central axis of the first heating element (2), wherein the central axis extends along the length direction of the first heating element (2).

5. The heating device as described in claim 2, characterized in that, The support frame (12) includes a cover portion (121) and a support portion (122). An annular groove (1223) is formed on the support portion (122). The first heating element (2) is located in the annular groove (1223). One end of the cover portion (121) is inserted into the annular groove (1223) so that the two form the receiving cavity (123). The cover portion (121) is provided with a plurality of intermediate air inlets (1211), which are spaced apart along the circumference of the cover portion (121); the support portion (122) is provided with a plurality of air outlets (1221), which are spaced apart along the circumference of the support portion (122).

6. The heating device as described in claim 5, characterized in that, The circumferential side of the support portion (122) has an abutment plate (1222), and the abutment plate (1222) and the end of the cover portion (121) away from the support portion (122) respectively cooperate with the two inner sides opposite to the main housing (11) to limit the position of the support frame (12) in the main housing (11) along the distribution direction of the cover portion (121) and the support portion (122).

7. The heating device according to any one of claims 1-6, characterized in that, The second heating element (3) is a ceramic heating plate.

8. The heating device according to any one of claims 1-6, characterized in that, The main frame (1) has a protruding part (1224) on the end face facing the cup body (201). The protruding part (1224) is located in the middle of the end face. The second heating element (3) is arranged on the end face around the protruding part (1224).

9. The heating device according to any one of claims 2-6, characterized in that, The main housing (11) has an installation cavity (113) and a placement cavity (114) formed therein. The placement cavity (114) is arranged around the circumference of the installation cavity (113). The support frame (12) is located in the installation cavity (113). The heating device also includes a control board, which is disposed in the placement cavity (114). The first heating element (2) and the second heating element (3) are both electrically connected to the control board.

10. The heating device as described in claim 9, characterized in that, The main housing (11) forms a receiving space (115) for placing the cup (201), the receiving space (115) is connected to the air vent (1221), and the placement cavity (114) is arranged around the circumference of the receiving space (115).

11. An aerosol generator, characterized in that, It includes an inhalation device (20) and a heating device (10) according to any one of claims 1-10, the heating device (10) being supported on a cup (201) on the inhalation device (20).

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